Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2008 Subaru Outback F4-2.5L SOHCFACTORY OEM SERVICE PROCEDURE
Connecting Rod, Engine
Connecting rod
Connecting rod cap
Tightening torque 45 N-m (4.6 kgf-m, 33.2 ft-lb)
Bend or twist per 100 mm (3.94 in) in length Limit 0.10 mm (0.0039 in)
Thrust clearance Standard 0.070 - 0.330 mm (0.0028 - 0.0130 in)
Bearing of large end
Oil clearance Standard 0.016 0.044 mm (0.00063 0.0017 in)
Bearing size (Thickness at center)
Standard 1.492 1.501 mm (0.0587 0.0591 in)
0.03 (0.0012) US 1.510-1.513 mm (0.0594-0.0596 in)
0.05 (0.0020) US 1.520-1.523 mm (0.0598-0.0600 in)
0.25 (0.0098) US 1.620-1.623 mm (0.0638-0.0639 in)
Bushing of small end
Clearance between piston pin and bushing Standard 0-0.022 mm (0-0.0009 in)
Connecting rod cap
Tightening torque 45 N-m (4.6 kgf-m, 33.2 ft-lb)
Bend or twist per 100 mm (3.94 in) in length Limit 0.10 mm (0.0039 in)
Thrust clearance Standard 0.070 - 0.330 mm (0.0028 - 0.0130 in)
Bearing of large end
Oil clearance Standard 0.016 0.044 mm (0.00063 0.0017 in)
Bearing size (Thickness at center)
Standard 1.492 1.501 mm (0.0587 0.0591 in)
0.03 (0.0012) US 1.510-1.513 mm (0.0594-0.0596 in)
0.05 (0.0020) US 1.520-1.523 mm (0.0598-0.0600 in)
0.25 (0.0098) US 1.620-1.623 mm (0.0638-0.0639 in)
Bushing of small end
Clearance between piston pin and bushing Standard 0-0.022 mm (0-0.0009 in)
Factory Service Tools
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.